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Opinions for engine Alignment

Old 11-07-2007, 07:54 AM
  #1  
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Default Opinions for engine Alignment

I have been redoing a old sportfish, It's been dry dock for 7 yrs. It is a 1978 40' Ocean Supersport, cockpit extension to make it 44'. New power ( Lugger 6125a's), new running gear, everything. How long should I let it sit in the water, before checking/realigning the shaft?
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Old 11-07-2007, 08:02 AM
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Default Re: Opinions for engine Alignment

Just did in on a 36ft Trojan repower to diesel. 24 hours. Run the engines with transmissions in neutral. This will allow the engine beds/mounts to settle. Disconnect couplings, re-align, run it at slow speeds while observing shaft log/coupling for movement. Increase speed to cruise while still observing. WOT while observing. Park it. Disconnect coupling and check alignment again. PITA, but sure beats driving one of those shafts thru the bottom or loosing the cutlas assembly.
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Old 11-07-2007, 08:18 AM
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Default Re: Opinions for engine Alignment

Thanks kbs, that makes alot of sense. Do you think idling it over to a slip from the travel lift will be ok, before letting it sit for 24 hours, or should I arrange for a tow?
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Old 11-07-2007, 08:23 AM
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Default Re: Opinions for engine Alignment

It all depends on how well the alignment held when it came off of the lift. I think you should be able to have someone observe the shaft/coupling/log as you ease her into gear. ANy wobble will only get worse. I had mine towed for 21 miles @ 4knots. The shafts were dry aligned at .3500. After sitting for 24 hours it dropped to less than .3000. I should have run it instead of sweating my butt off. WATCH IT CLOSELY.
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Old 11-07-2007, 09:14 AM
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Default Re: Opinions for engine Alignment

Thanks kbs. great info.
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